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immunoassay, immunochemical assay
identification of a substance (especially a protein) by its action as an antigen
a physiological test to determine whether a woman is pregnant
immunoassay of a substance that has been radioactively labeled
Friedman test, rabbit test
pregnancy test that involves injecting some of the woman's urine into an unmated female rabbit and later examining the ovaries of the rabbit; presence of corpora lutea indicates that the woman is pregnant